Like last year the programme of the Zandvoort Historic Grand Prix had to be changed completely. Traditionally, over sixty percent of the drivers and teams at the Historic Grand Prix are from the UK. The reason was obvious, Covid-19 and the strict rules relating to travel to and from the UK with a mandatory 10-day quarantine. In consultation with Masters Historic Racing and the FIA, it was decided that the classes Masters Historic Formula One, Masters Endurance Legends and the FIA Historic Formula 3 European Cup, amongst others, would not be present at the originally scheduled Historic Grand Prix 2021.
The MG Magnette K3 currently owned by John and Helen Gillett is chassis number K3 030 and better known as the ex Bira car. It was manufactured in 1933/34 and was the last to leave the the factory. It was originally ordered by and painted red for the Italian racing driver Pelligrini for his entry in the 1935 Mille Miglia race. However, Mussolini banned its import and the sale lapsed. In late 1934 or early 1935 it was purchased by Prince Chula Chakrabongse of Siam (the White Mouse Racing Team) for his cousin, Prince Birabongse (Bira).
The Seeliger Vauxhall was built by Ern Seeliger in 1949-1950. It used a 1930's Vauxhall 14 / 6 cylinder engine bored to 2 litres with 3 zenith downdraught carburettors, Lancia Lambda gearbox and a modified Ford SV differential with a homemade DeDion rear suspension based on Citroen light 6 components and torsion bars. The front suspension was a transverse leaf independent setup and used again a Citroen light 6 rack and pinion steering arrangement. The chassis was a twin tube ladder type and the car used Lancia Lambda wheels and mechanical brakes. The Seeliger car is detailed in Hank Van Flink's Racing Cars and Hot Rods of the World.